Thermistor Tool vs HVAC Expert Advisor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thermistor Tool
This application serves as a calculator for thermistors, supporting both Beta and Steinhart-Hart models. It facilitates conversions between temperature and resistance, and visualizes this relationship with a temperature-resistance graph. Ideal for hobbyists, students, and engineers.
- Beta model support
- Steinhart-Hart model support
- Temperature to resistance conversion
- Resistance to temperature conversion
- Temperature-resistance graph visualization
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This app is a calculator for thermistors. It is suitable for hobbyist, students or engineers. Features • support β model • support Steinhart–Hart model • conversion between temperature and resistance • show temperature-resistance graph All trade names mentioned in this app or the other documentation provided by this app are trademarks or registered trademarks of their respective holder. This app is not related or affiliated in any way these companies.
HVAC Expert Advisor
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Get instant HVAC support and answers with our AI-powered chat assistant. Whether you’re a homeowner, technician, or business owner, our app makes it easy to find reliable information and troubleshooting help for all your heating, ventilation, and air conditioning needs. Simply type your question and receive accurate, easy-to-understand answers in real time. Our intelligent chatbot is available 24/7, so you can access help whenever you need it—no appointments or waiting required. From step-by-step solutions for common HVAC problems to practical maintenance advice, you’ll have expert guidance at your fingertips. The user-friendly chat format ensures you can quickly get the help you need to keep your HVAC systems running smoothly and efficiently. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: HVAC Expert Advisor at daily against Thermistor Tool's every 10 months. Thermistor Tool's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Thermistor Tool sells 1 one-off in-app purchase and HVAC Expert Advisor sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.
Thermistor Tool ships an update every 10 months, HVAC Expert Advisor daily. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.
| Parameter | Thermistor Tool | HVAC Expert Advisor |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 10 months | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 3 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | ROCATECH LLC |
In-app purchases
Thermistor Tool
- Unlock Pro feature$1.99
HVAC Expert Advisor
- Basic Monthly Plan$12.991 Month
- Basic Annual Plan$119.991 Year
Questions
Is Thermistor Tool free?
Is HVAC Expert Advisor free?
Do Thermistor Tool or HVAC Expert Advisor have ads?
Which is updated more often, Thermistor Tool or HVAC Expert Advisor?
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